Battery charge monitors; Battery chargers; Charging systems for battery operated appliances; Electric battery chargers; Power supply devices for battery chargers; Uninterruptible power supply apparatus (battery); Chargers for electric batteries; Electrical charge apparatus; Portable field chargers; Electric power storage apparatus; Electric storage batteries; Electric storage batteries for use with engines; Electric storage batteries for use with motors; Electrical storage batteries; Electricity storage apparatus; Storage batteries (electric); Storage batteries for lighting